anishgirianish opened a new pull request, #60197:
URL: https://github.com/apache/airflow/pull/60197
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---
Summary
Alternative approach to #59553 - handles expired JWT tokens at the auth
layer instead of extending token lifetime.
When a task worker's JWT expires while the task is still running, the
worker currently gets a 403 and fails. This PR allows expired tokens to be
refreshed if the task is in QUEUED or RUNNING state.
Changes
deps.py - JWTBearer auth dependency
- Catch ExpiredSignatureError and attempt token refresh
- Validate signature, claims, and task state before refreshing
- Store refreshed token in request.state for middleware
app.py - JWTReissueMiddleware
- Check request.state.refreshed_token before proactive refresh
- Return refreshed token via Refreshed-API-Token header
tokens.py
- Make get_validation_key public (was _get_validation_key)
test_app.py
- Add tests for expired token refresh (success + rejection)
Why not just extend token lifetime?
- Longer-lived tokens = larger attack window if leaked
- Doesn't solve the problem, just delays it
Security
- Only refreshes for QUEUED/RUNNING tasks (DB check)
- Validates signature before refresh
- Validates all claims same as normal flow
closes #59553
alternative to #60108
---
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